Altafalh well(Spit
well)...
this is A well called (Altafalh well) or Spit well

This
is A well called (Altafalh well) or Spit well.

It is located in the
village called (Asfan) on the road between MAKKAHand Medina
the Messenger of Allah peace be upon him, when he
passed by this well, its water was salty (Saline) and not good for
drinking
then our Messenger of Allah peace be upon him spits in that well so the
water became sweet.

Another view of beyre Al-taflah

Well of
Tafla (بئر التفلة)
is in Asfan on the way between the capitals of the Islamic world Makkah
and Madina. This well though kept in an ignored state now was
reportedly did not dry till date after Rasoolullah (صلى
الله
عليه وسلم) had spit into it.

As per
historians, Rasoolullah (صلى الله عليه وسلم)
passed by Asfan while returning from Makkah after the “Bond of
Hudaibiyya” with Quryash tribe in 6th year of hijra. When He
(صلى الله عليه وسلم) along
with
1400companions reached there the well was dry.
He (صلى الله عليه وسلم) spit
into
it and the water streamed.

Asfan
was over many centuries in the route commuted by pilgrims to the house
of Allah. Even before the era of Islam Prophet Hud (عليه
السلام) and Prophet Salih (عليه
السلام)
had passed through this area. It was though this way the Quraysh
caravans of traders used to travel to Sham (present day Syria). It lies
at a distance of 55 km north of Makkah, and 345 km south of the city of
Madina.

Well
of Thafla is among many other unprotected and unpreserved sites in
Hijaz. There is neither a sign board nor a pawed road to guide one to
this site. Reporter of Arabic International news daily ‘Al Sharq al
awsat’ (الشرق الأوسط) ‘Sultan Obathany’ explains on the route to reach
the well in his report published in the news paper. WUneven
way leads to well of ALTAFLAH eWell
of Tafla (بئر التفلة)
is in Asfan on the way between the capitals of the Islamic world Makkah
and Madina. This well though kept in an ignored state now was
reportedly did not dry till date after Rasoolullah (صلى
الله عليه وسلم) had spit into it.

Clearly written ' BEYR-E- ALTAFLAH
" on the well. In ArabicBEYRE means well and
taflah means spit.